Home / 223,329.38-308,190.69-121,356.45

Finding the Fourth Proportional to 223,329.38, 308,190.69 and 121,356.45

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Solution

The fourth proportional to 223,329.38, 308,190.69 and 121,356.45 is: 167,469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,329.38 : 308,190.69 = 121,356.45 : x
  2. Step 2: Convert to fraction form
    223,329.38/308,190.69 = 121,356.45/x
  3. Step 3: Cross multiply
    223,329.38x = 308,190.69 × 121,356.45
  4. Step 4: Simplify right side
    223,329.38x = 37,400,928,061.45
  5. Step 5: Solve for x
    x = 37,400,928,061.45/223,329.38
  6. Step 6: Final answer
    x = 167,469.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.